Nordic RH-45-HACW Manuals

Manuals and User Guides for Nordic RH-45-HACW. We have 1 Nordic RH-45-HACW manual available for free PDF download: Service Manual

Nordic RH-45-HACW Service Manual (109 pages)

Liquid to Air Geothermal Heat Pumps

Brand: Nordic | Category: Heat Pump | Size: 21 MB

General Safety Precautions
2
Table of Contents
4
Tables & Documents
5
R/RH Description
6
General Overview
6
Heating Mode
6
Cooling Mode
6
Factory Options
6
Sizing
7
Heat Pump Sizing
7
Plenum Heater Sizing
7
Installation Basics
8
A2L's
8
Unpacking the Unit
8
Unit Placement
8
Plenum Heater Installation (Accessory)
8
Air Return Orientation
8
R-Series Air Outlet Orientation
9
RH-Series Air Outlet Orientation
9
Sample Bill of Materials - Ground Loop Installations
10
Sample Bill of Materials - Open Loop Installations
10
001915INF - Internal Plenum Heater Installation
11
Wiring
12
Power Supply Connections
12
Auxiliary Plenum Heater: Power Supply Connections
12
Aux. Plenum Heater: Control Connections
12
Outdoor Loop Pump Module Wiring (Ground Loop Only)
12
Control Transformer
12
Bacnet Connections
13
Air Thermostat Connections
13
Air Thermostat Operation
13
Airflow Reduction for Zoning
13
Open/Closed Loop Wiring
13
Domestic Hot Water (Desuperheater)
13
Disable Switch (Field Installed)
13
Refrigerant Vent Fan Connections
13
002071CDG - Typical GEN2 Thermostat Connections
14
Piping
15
Domestic Hot Water (Desuperheater) Connections
15
Condensate Drain
15
Outdoor Loop
15
002511PDG - Typical Loop Connections - R Series
16
000970PDG - Desup. Connection to DHW Pre-Heat Tank
17
Ductwork
18
Blower Motor
18
Air Duct Zoning
18
Duct Systems - General
18
Duct Systems - Grill Layout
18
Thermostat Location
18
Plenum Heater
18
001201CDG - Typical Duct and Condensate Connections
19
Duct Sizing Guide
20
Ground Loop Installations
21
Circulator Pump Module
21
Flushing & Purging
21
Adding Antifreeze Solution
22
Initial Pressurization
22
Pipe Insulation
22
000608INF - Typical Horiz. Ground Loop Configuration
23
000609INF - Typical Vert. Ground Loop Configuration
24
000906CDG - Circulator Pump Module Installation
25
001823CDG - Dual Flow Pump Module Installation
26
002336PDG - Pump Module Inst - 2 Units on 1 Loop
27
Open Loop Installations
28
Well Water Temperature
28
Well Water Flow
28
Well Water Quality
28
Water Discharge Methods
28
Water Valve
29
Water Flow Control
30
Submersible Pump Selection
30
Stage 1 Vs. 2 on Open Loop
30
Plumbing the Heat Pump
30
Pipe Insulation
30
000907CDG - Typical Open Loop Installation
31
001822CDG - Dual Flow Open Loop Installation
32
000619INF - Ground Water Disposal Methods
33
PC Application (PC App)
34
PC Application Menus
34
Windows Menu
34
LCD Interface & Menus
46
Bacnet Interface
47
Startup Procedure
51
Pre-Start Inspection
51
Unit Startup
52
Startup Record
53
Routine Maintenance
54
Maintenance Schedule
54
Coaxial Heat Exchanger Flushing Procedures
54
Troubleshooting Guide
56
Power Supply Troubleshooting
56
Recommended Action
56
Alarm Troubleshooting
57
Fault Troubleshooting
58
Compressor Troubleshooting
60
Operation Troubleshooting
61
Service Procedures
69
Servicing a Unit with an A2L Refrigerant
69
Pumpdown Procedure
71
General Repair Procedure
71
Vacuuming & Charging Procedure
71
Compressor Replacement Procedure
72
Control Board Replacement Procedure
73
LCD Interface (Display) Board Replacement Procedure
74
Decommissioning
75
Model Specific Information
76
Refrigerant Charge
76
Weights and Shipping Dimensions
76
Operating Temperature Limits
76
Standard Capacity Ratings
77
Pressure Drop Data
78
Performance Tables
80
Electrical Specifications
84
Airflow Data
85
Wiring Diagram (208/230-1-60)
86
Wiring Diagram (265/277-1-60)
88
Refrigeration Circuit Diagram
90
Dimensions: R-45 Left Return
91
Dimensions: R-45 Right Return
92
Dimensions: R-55/65/75 Left Return
93
Dimensions: R-55/65/75 Right Return
94
Dimensions: RH-45 Left Return
95
Dimensions: RH-45 Right Return
96
Dimensions: RH-55/65/75 Left Return
97
Dimensions: RH-55/65/75 Right Return
98
Appendix A: Control Board Description
99
Appendix B: USB Driver Installation
103
Appendix C: PC App Installation (Win11)
104
Appendix D: PC App Installation (Win10)
105
Appendix E: Updating Firmware
106
Reset to Defaults
107
Warranty
109

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